Exactly the same problem. I can not believe the power supply is shot. The TV worked great until the 3rd time this happened. My research indicates the power supply also. Toshiba should not allow this to happen. I am in the market for a new TV but I will not buy another Toshiba. Seven years old - this is absolutely the shortest time a TV has lasted for me. I am not willing to set a new low standard. Exactly the same problem. I can not believe the power supply is shot. The TV worked great until the 3rd time this happened. My research indicates the power supply also. Toshiba should not allow this to happen. I am in the market for a new TV but I will not buy another Toshiba. Seven years old - this is absolutely the shortest time a TV has lasted for me. I am not willing to set a new low standard.

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there is an auto search method....some remotes you can hold the tv button down and then the select button simultanteously for a few seconds to make the light turn red and then proceed with codes, when you get the right code you press the select button again, the light blinks and you are done..... well with out a code its the luck of the draw..... the auto search method is similar to programming the code in....hold the tv button and the select button for a couple seconds until the tv button lights up, but instead of a code.....press the channel up button(that represents the first autosearch code), continue until the tv turns itself off and then press the select button to lock it into the remote...........if you go past the trigger point you can channel down to backtrack.... otherwise drop it in the toilet until it wont work, call the cable company and have them send out a tech with anew remote. they cant charge you for their equipment not working correctly.trust me, i am a supervisor at a major cable company.

The remotes you get from the cable company are universal and kinda cheap. ive ran across this multiple times but since i dont know what model remote you have the only advice i can give is that the code you used is not the right code if it doesnt do all basic functions (on,off for the tv,volume)its just the wrong code if the codes you stated are the only ones available the book you got with the remote should explain how to run an auto scan.hope i was some help

Most remotes have a "Search for Code" or learn function. However, since Comcast currently supports 8 different types of remote controls, your best bet is their website. This link takes you to all of the remotes they currently support, find your remote and click on the View Manual link next to it.

You might have lost the code from the remote which identifies the tv to your remote. If you have the manual that came with the remote you might try entering the code again. ( reprogram
the remote).
Stargazer